It’s a Ztool I bought from Zack Petroc’s site. It works fine, but I merged some of it’s parts and saved it as a different ztool and now I can’t mask or hide anything (on the new ztool). If I try hiding a polygroup, it doesn’t, if I try hiding via masking, it doesn’t, if I try doing it the normal way, it crashes. Very frustrating cause it took me a while merging different areas and naming the subtools, etc etc, and now I can’t even hide or mask.
When you merged things, I think you changed (added to the point order) in the model. The polygroups don’t automatically update AFIK. You might try using the autogroup feature to recreate polygroups for each separate mesh.
-K